KR20160037087A - Methods for configuring Downlink resource for a MTC UE and Apparatuses thereof - Google Patents

Abstract

The present invention relates to a downlink resource configuration technique for supporting a low complexity UE category / type for a MTC (Machine Type Communication) terminal in a 3GPP LTE / LTE-Advanced system. In particular, the present invention provides a method for receiving a downlink signal by a MTC (Machine Type Communication) terminal, comprising the steps of: monitoring a common area and a terminal specific area set separately for the MTC terminal; information or common control information, and receiving a downlink data channel (PDSCH) according to UE-specific control information or the UE-specific control information through a UE-specific region And to provide a method and apparatus.

Description

[0001] The present invention relates to a method and apparatus for configuring a downlink resource for a MTC terminal,

The present invention relates to a downlink resource configuration technique for supporting a low complexity UE category / type for a MTC (Machine Type Communication) terminal in a 3GPP LTE / LTE-Advanced system. Particularly, in order to efficiently support a low complexity UE category / type for MTC operation, a common control transmission / reception interval and a UE-specific transmission / reception interval are divided into a time division scheme To a multiplexing technique.

Machine type communication (hereinafter referred to as "MTC" communication) is a type of data communication in which one or more entities represent a machine to machine communication that does not necessarily require human interaction . MTC communication that does not require human interaction refers to all communication methods in which communication is performed without human intervention in the communication process.

The MTC terminal can be installed in a place where the radio wave environment is worse than that of a general terminal. It may be necessary to repeatedly transmit control information and / or data of each physical channel transmitted only in one subframe in a plurality of subframes in order for the MTC terminal to operate in a place where the radio wave environment is worse than that of a general terminal.

In addition, since the MTC terminal can be set to operate in a limited frequency band, control information or the like in the existing LTE network can not be normally received. That is, the control information reception bandwidth in the existing LTE network is different from the available reception bandwidth of the MTC terminal, so that the MTC terminal can not receive the control information using the LTE network.

In the above background, the present invention proposes a method and apparatus for configuring downlink resources so that control information can be received using an LTE network even in a limited bandwidth of the MTC terminal.

Also, the present invention proposes a method and apparatus for constructing separate downlink resources to reduce reception complexity and power consumption of the MTC terminal, and transmitting and receiving downlink control information using the downlink resources.

According to an aspect of the present invention, there is provided a method of receiving a downlink signal by a MTC (Machine Type Communication) terminal, the method comprising: monitoring a common area and a terminal specific area set separately for the MTC terminal; The method includes receiving common control information or scheduling information for common control information, and transmitting the UE-specific control information or the downlink data channel according to the UE- (PDSCH). ≪ / RTI >

According to another aspect of the present invention, there is provided a method for transmitting a downlink signal, the method comprising: setting a common area and a UE specific area for a MTC (Machine Type Communication) terminal; Transmitting scheduling information for common control information and transmitting a downlink data channel (PDSCH) according to UE-specific control information or UE-specific control information through a UE-specific region ≪ / RTI >

According to another aspect of the present invention, there is provided a MTC (Machine Type Communication) terminal for receiving a downlink signal, the MTC terminal including a controller for monitoring a common area and a terminal specific area set separately for the MTC terminal, Specific control information (UE-specific control information) or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific area And provides a terminal device.

According to another aspect of the present invention, there is provided a base station for transmitting downlink signals, comprising: a controller for setting a common area and a terminal specific area for a MTC (Machine Type Communication) terminal; And transmitting a downlink data channel (PDSCH) according to the UE-specific control information or the UE-specific control information through the UE-specific region, to provide.

According to the present invention, it is possible to receive control information using the LTE network even in a limited bandwidth of the MTC terminal.

In addition, according to the present invention, it is possible to receive downlink control information normally while reducing reception complexity and power consumption of the MTC terminal.

1 is a diagram illustrating an operation of an MTC terminal according to an exemplary embodiment of the present invention.
2 is a diagram illustrating a base station operation according to another embodiment of the present invention.
3 is a diagram illustrating a configuration of an MTC terminal according to another embodiment of the present invention.
4 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Herein, the MTC terminal may mean a terminal supporting low cost (or low complexity) or a terminal supporting coverage enhancement. In this specification, the MTC terminal may mean a terminal supporting low cost (or low complexity) and coverage enhancement. Alternatively, the MTC terminal may refer to a terminal defined in a specific category for supporting low cost (or low complexity) and / or coverage enhancement.

In other words, the MTC terminal may refer to a newly defined 3GPP Release 13 low cost (or low complexity) UE category / type for performing LTE-based MTC-related operations. Alternatively, the MTC terminal may support the enhanced coverage over the existing LTE coverage or the UE category / type defined in the existing 3GPP Release 12 or lower that supports the low power consumption, or the newly defined Release-13 low cost (or low complexity UE category / type.

The wireless communication system in the present invention is widely deployed to provide various communication services such as voice, packet data and the like. A wireless communication system includes a user equipment (UE) and a base station (BS, or eNB). The user terminal in this specification is a comprehensive concept of a terminal in wireless communication. It is a comprehensive concept which means a mobile station (MS), a user terminal (UT), an SS (User Equipment) (Subscriber Station), a wireless device, and the like.

A base station or a cell generally refers to a station that communicates with a user terminal and includes a Node-B, an evolved Node-B (eNB), a sector, a Site, a BTS A base transceiver system, an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and a small cell.

That is, in the present specification, a base station or a cell has a comprehensive meaning indicating a part or function covered by BSC (Base Station Controller) in CDMA, Node-B in WCDMA, eNB in LTE or sector (site) And covers various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node, RRH, RU, and small cell communication range.

Since the various cells listed above exist in the base station controlling each cell, the base station can be interpreted into two meanings. i) the device itself providing a megacell, macrocell, microcell, picocell, femtocell, small cell in relation to the wireless region, or ii) indicating the wireless region itself. i indicate to the base station all devices that are controlled by the same entity or that interact to configure the wireless region as a collaboration. An eNB, an RRH, an antenna, an RU, an LPN, a point, a transmission / reception point, a transmission point, a reception point, and the like are exemplary embodiments of a base station according to a configuration method of a radio area. ii) may indicate to the base station the wireless region itself that is to receive or transmit signals from the perspective of the user terminal or from a neighboring base station.

Therefore, a base station is collectively referred to as a base station, collectively referred to as a megacell, macrocell, microcell, picocell, femtocell, small cell, RRH, antenna, RU, low power node do.

Herein, the user terminal (or MTC terminal) and the base station are used in a broad sense as the two transmitting and receiving subjects used to implement the technical or technical idea described in this specification, and are not limited by a specific term or word . Here, uplink (UL, or uplink) refers to a method of transmitting / receiving data to / from a base station by a user terminal (or MTC terminal), and downlink (DL or downlink) And transmits / receives data to / from the terminal (or MTC terminal).

There are no restrictions on multiple access schemes applied to wireless communication systems. Various multiple access schemes such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), OFDM-FDMA, OFDM- Can be used. An embodiment of the present invention can be applied to asynchronous wireless communication that evolves into LTE and LTE-Advanced via GSM, WCDMA, and HSPA, and synchronous wireless communication that evolves into CDMA, CDMA-2000, and UMB. The present invention should not be construed as limited to or limited to a specific wireless communication field and should be construed as including all technical fields to which the idea of the present invention can be applied.

A TDD (Time Division Duplex) scheme in which uplink and downlink transmissions are transmitted using different time periods, or an FDD (Frequency Division Duplex) scheme in which they are transmitted using different frequencies can be used.

In systems such as LTE and LTE-Advanced, the uplink and downlink are configured on the basis of one carrier or carrier pair to form a standard. The uplink and the downlink are divided into a Physical Downlink Control Channel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel, a Physical Uplink Control CHannel (PUCCH), an Enhanced Physical Downlink Control Channel (EPDCCH) Transmits control information through the same control channel, and is configured with data channels such as PDSCH (Physical Downlink Shared CHannel) and PUSCH (Physical Uplink Shared CHannel), and transmits data.

On the other hand, control information can also be transmitted using EPDCCH (enhanced PDCCH or extended PDCCH).

In this specification, a cell refers to a component carrier having a coverage of a signal transmitted from a transmission point or a transmission point or transmission / reception point of a signal transmitted from a transmission / reception point, and a transmission / reception point itself .

The wireless communication system to which the embodiments are applied may be a coordinated multi-point transmission / reception system (CoMP system) or a coordinated multi-point transmission / reception system in which two or more transmission / reception points cooperatively transmit signals. antenna transmission system, or a cooperative multi-cell communication system. A CoMP system may include at least two multipoint transmit and receive points and terminals.

The multi-point transmission / reception point includes a base station or a macro cell (hereinafter referred to as 'eNB'), and at least one mobile station having a high transmission power or a low transmission power in a macro cell area, Lt; / RTI >

Hereinafter, a downlink refers to a communication or communication path from a multipoint transmission / reception point to a terminal, and an uplink refers to a communication or communication path from a terminal to a multiple transmission / reception point. In the downlink, a transmitter may be a part of a multipoint transmission / reception point, and a receiver may be a part of a terminal. In the uplink, the transmitter may be a part of the terminal, and the receiver may be a part of multiple transmission / reception points.

Hereinafter, a situation in which a signal is transmitted / received through a channel such as PUCCH, PUSCH, PDCCH, EPDCCH, and PDSCH is expressed as 'PUCCH, PUSCH, PDCCH, EPDCCH and PDSCH are transmitted and received'.

In the following description, an indication that a PDCCH is transmitted or received or a signal is transmitted or received via a PDCCH may be used to mean transmitting or receiving an EPDCCH or transmitting or receiving a signal through an EPDCCH.

That is, the physical downlink control channel described below may mean a PDCCH, an EPDCCH, or a PDCCH and an EPDCCH.

Also, for convenience of description, EPDCCH, which is an embodiment of the present invention, may be applied to the portion described with PDCCH, and EPDCCH may be applied to the portion described with EPDCCH according to an embodiment of the present invention.

Meanwhile, the High Layer Signaling described below includes RRC signaling for transmitting RRC information including RRC parameters.

The eNB performs downlink transmission to the UEs. The eNB includes a physical downlink shared channel (PDSCH) as a main physical channel for unicast transmission, downlink control information such as scheduling required for reception of PDSCH, and uplink data channel A physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission in a Physical Uplink Shared Channel (PUSCH). Hereinafter, the transmission / reception of a signal through each channel will be described in a form in which the corresponding channel is transmitted / received.

According to a method for transmitting and receiving a downlink radio signal and a radio channel between a base station and a terminal defined in a conventional 3GPP LTE / LTE-Advanced system, in the case of an arbitrary RRC connected terminal, all downlink subframes (or DRX (Common Search Space) and USS (UE-specific Search Space) configured through PDCCH or EPDCCH, which are downlink control channels of the downlink control channel of the UE in the DRX on period, Scheduling information for broadcasting / multicasting traffic such as SIB (System Information Block), RAR (Random Access Response), and paging message, and scheduling information for unicasting traffic for the corresponding terminal have. Accordingly, the UE is defined to be able to receive broadcasting / multicasting messages and unicasting messages through all downlink subframes.

Specifically, a method of configuring a CSS for transmitting scheduling information for a broadcasting / multicasting message for an arbitrary terminal in a PDCCH or EPDCCH transmitted through an arbitrary downlink subframe, and a method of transmitting scheduling information for a unicasting message See 3GPP TS36.213 for how to configure the USS.

MTC  Low complexity for operation Terminal category / type (Low complexity UE  category / type for MTC operation)

As LTE or LTE-Advanced networks spread, mobile operators want to minimize the number of Radio Access Terminals (RATs) to reduce network maintenance costs. Meanwhile, the number of MTC products based on the conventional GSM / GPRS network is increasing, and a MTC terminal using a low data rate can be provided at low cost. Therefore, there is a problem that two RATs must be operated when using a LTE / LTE-Advanced network for general data transmission and a GSM / GPRS network for MTC terminal. In addition, this is a problem in terms of profitability and efficiency of the mobile communication carrier due to inefficient utilization of the frequency band.

In order to solve such a problem, a cheap MTC terminal using a GSM / EGPRS network should be replaced with an MTC terminal using an LTE / LTE-Advanced network. To this end, a variety of techniques for lowering the price of an LTE / LTE- Requirements are being discussed. In addition, various functions are being studied to satisfy the discussed requirements. That is, there is a need for defining a low complexity UE category / type that reflects various requirements to lower the price of LTE MTC terminals.

In addition, about 20% of MTC terminals supporting MTC services such as smart metering are installed in a deep indoor environment such as a basement, so that for successful MTC data transmission, It should be improved by about 15dB compared with the coverage of general LTE / LTE-Advanced terminal. Also, considering the performance degradation due to the above technique, the coverage of the LTE MTC terminal should be improved by more than 15 dB.

In order to improve the coverage while lowering the LTE / LTE-Advanced MTC terminal price, a robust transmission such as PSD boosting, low coding rate and time domain repetition, It is necessary to develop various technologies for

Specifically, the requirements of the low complexity UE category / type for MTC operation are as follows.

Reduced UE bandwidth of 1.4 MHz in downlink and uplink.

◆ Bandwidth reduced UEs should be able to operate within any system bandwidth.

◆ Frequency multiplexing of bandwidth reduced UEs and non-MTC UEs should be supported.

◆ The UE only needs to support 1.4 MHz RF bandwidth in downlink and uplink.

■ Reduced maximum transmit power.

Reduced support for downlink transmission modes.

● further UE processing relaxations

◆ Reduced maximum transport block size for unicast and / or broadcast signaling.

◆ Reduced support for simultaneous reception of multiple transmissions.

◆ Relaxed transmit and / or receive EVM requirements including restricted modulation scheme. Reduced physical control channel processing (e.g., reduced number of blind decoding attempts).

Reduced physical data channel processing (e.g., relaxed downlink HARQ time line or reduced number of HARQ processes).

◆ Reduced support for CQI / CSI reporting modes.

● Target a relative LTE coverage improvement - corresponding to 15 dB for FDD - for the UE category / type defined above and other UEs operating delay tolerant MTC applications with respect to their respective nominal coverage.

● Provide power consumption reduction for the UE category / type defined above, both in normal coverage and enhanced coverage, to target ultra-long battery life:

In the present invention, new coverage enhancement and coverage enhancement and low complexity UE category / type satisfying the above-mentioned conditions for MTC operation are simply described in the MTC terminal for convenience of explanation.

On the other hand, in the case of the above-mentioned MTC terminal, due to the characteristic of the UE RF bandwidth reduction limited to 1.4 MHz, the LTE (Radio Frequency Identification) based on any system bandwidth (for example, 5 MHz, 10 MHz, 20 MHz, When operating in the network, it is impossible to receive PDCCH. In addition, repeated transmission and reception may be required for each uplink and downlink radio channel and signal according to a coverage enhancement level required for each MTC terminal. In addition, unlike the existing UE, in the case of the low complexity UE category / type, simultaneous transmission / reception of a plurality of radio channels and signals may not be implemented. Therefore, Simultaneous reception of unicast traffic and broadcast traffic may not be possible.

In order to solve such a problem, the present invention proposes a downlink resource setting method for the MTC terminal. Particularly, a common region and a UE-specific region are separately defined as a method for reducing reception complexity and power consumption of a terminal, and a broadcast for an arbitrary MTC terminal / Multicast traffic and unicast traffic using separate time resources.

1 is a diagram illustrating an operation of an MTC terminal according to an exemplary embodiment of the present invention.

A method of receiving a downlink signal by a MTC (Machine Type Communication) terminal according to an exemplary embodiment of the present invention includes steps of monitoring a common area and a terminal specific area set separately for the MTC terminal, (UE-specific control information) or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region, the method comprising: receiving scheduling information for control information or common control information; Step < / RTI >

Referring to FIG. 1, the MTC terminal of the present invention may include a step of monitoring a common area and a terminal specific area separately set for the MTC terminal (S110). In the present invention, a common region and a UE-specific region for the MTC terminal are defined. The common area may be a cell specific area for MTC terminals in the cell, and the UE specific area may be an area set for each MTC terminal.

This common area and the UE specific area can be set by the base station. The setting information of the common area or the UE-specific area may be received through the base station, or may be predefined and stored. For example, time resource and frequency resource configuration information for a UE-specific region may be received through higher layer signaling. Alternatively, time resource or frequency resource configuration information for the common area may be received via the PBCH.

The setting information includes information related to time resources and frequency resources for the common area or the UE-specific area. For example, the time resource setting information for the common area or the UE-specific area may include setting information for a subframe pattern or a radio frame pattern. Alternatively, frequency resources for the common area or the UE-specific area may be allocated in units of six consecutive physical resource blocks (PRBs). Information on the allocated frequency resources may be received included in the configuration information.

For example, the setting information for a subframe pattern or a radio frame pattern may be allocated through cell-specific or UE-specific upper layer signaling. Alternatively, the setting information for the subframe pattern or the radio frame pattern includes the subframe set information and may be allocated through the system information block for the MTC terminal.

Meanwhile, the MTC terminal may include receiving the common control information or the scheduling information for the common control information through the common area (S120). The MTC terminal can receive system information, random access response information, paging information, or the like through the above-described common area. Alternatively, the MTC terminal may receive scheduling information for each of the system information, the random access response information, or the paging information through the common area. The scheduling information may be received through monitoring of the common search space of the control channel.

In addition, the MTC terminal may include receiving UE-specific control information through a UE-specific area (S 130). The MTC terminal receives the terminal-specific control information set for each MTC terminal through the terminal-specific area. For example, it can receive a terminal specific DCI. The MTC terminal can receive the downlink data traffic on the PDSCH based on the received UE-specific DCI.

Hereinafter, a method of transmitting and receiving information via the common area and the terminal specific area will be described in more detail.

In the present invention, a common region and a UE-specific region for an arbitrary MTC terminal can be set. A common region is a cell-specific region in which common control information is transmitted for a terminal in a cell. That is, System Information Blocks (SIBs), Random Access Response (RAR) messages or paging messages are transmitted through a corresponding broadcast / multicast region of the common area. Accordingly, the MTC terminal in the cell can receive SIBs, RAR, or paging messages in the corresponding broadcast region.

Alternatively, the MTC terminal can monitor the Common Search Space (CSS) of the M-PDCCH according to a scheduling method of SIBs, RARs or paging messages. That is, when the resource allocation method through the M-PDCCH is applied in SIBs, RAR or paging message transmission / reception, the MTC terminal can monitor the CSS of the M-PDCCH. The M-PDCCH in this specification means a downlink control channel defined for the MTC terminal, and may include a part or all of the PDCCH or the EPDCCH. Or the M-PDCCH is used to mean a downlink control channel defined for the MTC terminal, and is not limited to the word.

Meanwhile, the UE-specific DCI transmission through the M-PDCCH CSS and the UE-specific control message through the PDSCH may be transmitted through the common area.

A UE-specific region is a region set for each MTC terminal, and resources can be allocated through a UE-specific upper layer message. That is, the UE-specific region is time-frequency resource allocated to the UE-specific region through UE-specific RRC signaling.

The MTC terminal can receive UE-specific control information for the UE through the M-PDCCH transmitted through the established UE-specific region. That is, the MTC terminal receives the UE-specific DCI (Downlink Control Information) and receives the downlink data traffic for the MTC terminal through the PDSCH. That is, the USS setting of the M-PDCCH for each MTC terminal is performed through the corresponding MTC terminal, and the MTC terminal sets the M-PDCCH based on the C-RNTI based M- PDCCH monitoring is performed.

Meanwhile, the common area and the UE specific area of the present invention are intended to solve the narrow bandwidth problem of the MTC, and a concrete method of setting the common area and the UE specific area by the BS will be described below.

On the other hand, the common area and the UE specific area may be overlapped in the time domain. In this case, the MTC terminal can be configured to receive monitoring and downlink information with priority in the common area. Alternatively, the time-base resource allocation for the UE-specific region may be set to the UE-specific region without signaling separately so that the time-base overlap does not occur.

The time domain resources for the common area or the UE-specific area may be set in units of a subframe or a radio frame. For example, the subframe pattern for the common area or the setting information for the radio frame pattern may be transmitted to the MTC terminals in the corresponding cell through the newly defined PBCH for the PBCH or the MTC terminal. Alternatively, the information on the SIBs transmission subframe or the radio frame pattern is transmitted through the newly defined PBCH for the PBCH or the MTC terminal described above, and the subframe pattern or the radio frame pattern in which the RAR and the paging message are transmitted through the corresponding SIBs Can be transmitted.

In addition, when a time-base resource for a UE-specific area is signaled, a subframe pattern or a radio frame pattern for the UE-specific area may be set through the corresponding RRC message. That is, a subframe or radio frame pattern information allocated to a common area and a UE-specific area for receiving a downlink from a base station, that is, a MTC frame, which is valid for downlink reception from a base station, Frame or radio frame pattern information may be set through cell-specific or UE-specific RRC signaling.

On the other hand, a frequency domain resource for the common area or the UE-specific area also needs to be set.

For example, frequency axis resources for the common area and the UE-specific area can be allocated in units of 6 consecutive Physical Resource Blocks (PRBs).

개의 RBs로 구성된 경우, 해당 시스템 대역폭은 0, 1, …,

-1까지 총

개의 MTC 서브 밴드(MTC sub-band)로 나뉠 수 있다. 즉, MTC 서브 밴드 0은 PRB index #0~5번까지 총 6개의 PRBs로 구성되고, 이어서 MTC 서브 밴드 1은 PRB index #6~11번으로 구성되는 방식으로, PRB index ＃

∼

번까지 6개의 PRBs로 구성되는 마지막 MTC 서브 밴드 #

-1까지 총

개의 MTC 서브 밴드로 나뉠 수 있다. For example, when the MTC terminal is supported in a certain cell, the system bandwidth constituting the corresponding cell is

If it is composed of RBs, the corresponding system bandwidth is 0, 1, ... ,

Total to -1

(MTC sub-band). ≪ / RTI > That is, the MTC subband 0 is composed of PRB indexes # 0 to # 5 in total, and the MTC subband # 1 is composed of PRB index # 6 to # 11. The PRB index #

~

Lt; RTI ID = 0.0 > MTC < / RTI > subband #

Total to -1

RTI ID = 0.0 > MTC < / RTI > subbands.

-1까지 구성하고 남은 PRBs까지 이용하여 MTC 서브 밴드를 구성할 수도 있다. 즉, 시스템 대역폭이

개의 RBs로 구성된 경우, 해당 시스템 대역폭은 0, 1, …,

-1 까지 총

개의 MTC 서브 밴드로 나뉠 수 있다. 이 경우, MTC 서브 밴드 0은 PRB index #0~5번까지 총 6개의 PRBs로 구성되고, 이어서 MTC 서브 밴드 1은 PRB index #6~11번까지로 구성되는 식으로, PRB index #

~

-1 로 구성되는 마지막 MTC 서브 밴드까지 총

개의 MTC 서브 밴드로 나뉠 수도 있다. As another example, the last MTC subband #

-1, and the remaining PRBs may be used to construct an MTC subband. That is,

If it is composed of RBs, the corresponding system bandwidth is 0, 1, ... ,

Total to -1

RTI ID = 0.0 > MTC < / RTI > subbands. In this case, MTC subband 0 is composed of PRB indexes # 0 to # 5 in total, and MTC subband 1 is composed of PRB index # 6 to # 11, and PRB index #

~

A total of up to the last MTC subband consisting of -1

RTI ID = 0.0 > MTC < / RTI > subbands.

Accordingly, the frequency domain resources of the common region and the UE-specific region can be allocated in units of the MTC subband described above. At this time, the MTC subband allocation for the common area can be transmitted to the MTC terminal in the corresponding cell via the PBCH or SIB1. Alternatively, any fixed MTC subband may be allocated as a common area.

On the other hand, in the case of the MTC subband for the UE-specific area, it can be allocated through the UE-specific RRC signaling for each MTC terminal.

2 is a diagram illustrating a base station operation according to another embodiment of the present invention.

A method for transmitting a downlink signal according to another exemplary embodiment of the present invention includes: setting a common area and a UE specific area for a MTC terminal; and transmitting common control information or common control information And transmitting the downlink data channel (PDSCH) according to the UE-specific control information or the UE-specific control information through the UE-specific region.

Referring to FIG. 2, the base station of the present invention may include setting a common region and a UE specific region for the MTC terminal (S210). The base station can set a common area and a terminal specific area for the MTC terminal. The common area may be a cell specific area for MTC terminals in the cell, and the UE specific area may be an area set for each MTC terminal.

The newly defined common area includes the common search space of the DL control channel and the UE specific area may be set up to include the UE specific search space of the DL control channel.

On the other hand, the setting information of the common area or the UE specific area may be transmitted to the MTC terminal, or may be defined and stored in advance. For example, time resource and frequency resource configuration information for the UE-specific region may be transmitted through cell-specific or UE-specific upper layer signaling. Alternatively, time resource or frequency resource configuration information for the common area may be transmitted via the PBCH or SIB.

The setting information includes information related to time resources and frequency resources for the common area or the UE-specific area. For example, the time resource setting information for the common area or the UE-specific area may include setting information for a subframe pattern or a radio frame pattern. Alternatively, frequency resources for the common area or the UE-specific area may be allocated in units of six consecutive physical resource blocks (PRBs). Information on the allocated frequency resources may be received included in the configuration information.

In addition, the base station of the present invention may include transmitting common control information or scheduling information for common control information through a common area (S220). The base station can transmit system information, random access response information, paging information, or the like through the above-described common area. Alternatively, the base station may transmit scheduling information for each of the system information, the random access response information, or the paging information through the common area. The scheduling information may be transmitted through the common search space of the control channel.

In addition, the base station of the present invention may include transmitting UE-specific control information through a UE-specific region (S230). The base station transmits the UE-specific control information set for each MTC terminal through the UE-specific area. For example, the base station may transmit a UE-specific DCI. The MTC terminal can receive the downlink data traffic on the PDSCH based on the received UE-specific DCI.

In addition, the base station of the present invention can perform all the steps necessary to perform each of the embodiments of the present invention described above.

As described above, according to the present invention, it is possible to receive control information using the LTE network even in a limited bandwidth of the MTC terminal. In addition, according to the present invention, it is possible to receive downlink control information normally while reducing reception complexity and power consumption of the MTC terminal.

Hereinafter, the configuration of the MTC terminal and the base station of the present invention will be briefly described again with reference to the drawings.

3 is a diagram illustrating a configuration of an MTC terminal according to another embodiment of the present invention.

Referring to FIG. 3, the MTC terminal 300 receiving the downlink signal according to another embodiment of the present invention includes a controller 310 for monitoring a common area and a terminal specific area set separately for the MTC terminal, Specific control information or a downlink data channel according to the UE-specific control information through the UE-specific area, and receives scheduling information for common control information or common control information through the UE- (PDSCH), as shown in FIG.

The transmitter 310 transmits uplink control information, data, and a message to the base station through the corresponding channel.

The receiving unit 330 may receive time resource or frequency resource setting information for the common area through the PBCH. Also, the reception unit 330 receives downlink control information, data, and a message from the base station through the corresponding channel. The receiving unit 330 may receive time resource setting information for the common area or the UE-specific area including setting information for a subframe pattern or a radio frame pattern. The setting information for the subframe pattern or the radio frame pattern may be received through cell-specific or UE-specific upper layer signaling. Alternatively, the setting information for the subframe pattern or the radio frame pattern includes the subframe set information and can be received through the system information block for the MTC terminal.

In addition, the control unit 310 allocates a common area and a UE-specific area required to perform the above-described present invention, monitors the respective areas, and controls the overall operation of the MTC terminal 300 according to receiving a downlink signal do.

In addition, the control unit 310, the transmitting unit 320, and the receiving unit 330 may perform all operations required to perform all of the embodiments of the present invention described above.

4 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention

4, the base station 400 for transmitting the downlink signal of the present invention includes a control unit 410 for setting a common area and a UE specific area for the MTC terminal, and common control information through a common area, Specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region, and transmits the scheduling information for the common control information, . ≪ / RTI >

The transmitter 420 may further transmit time resource and frequency resource configuration information for the UE-specific region through higher layer signaling. In addition, the transmitter 420 may further transmit time resource or frequency resource setting information for the common area through the PBCH. The transmitting unit 420 may transmit time resource setting information for a common area or a UE-specific area including setting information for a subframe pattern or a radio frame pattern. For example, the setting information for the subframe pattern or the radio frame pattern may be transmitted through cell-specific or UE-specific upper layer signaling. Alternatively, the setting information for the subframe pattern or the radio frame pattern includes the subframe set information and can be transmitted through the system information block for the MTC terminal.

In addition, the transmitting unit 420 and the receiving unit 430 are used to transmit and receive signals, messages, and data necessary for carrying out the present invention to and from the MTC terminal.

The control unit 410 sets a separate common area and a UE specific area for the MTC terminal required to perform the above-described present invention, and transmits the downlink information to the overall base station 400).

In addition, the control unit 410, the transmitting unit 420, and the receiving unit 430 may perform all the operations required to perform all of the embodiments of the present invention described above.

The standard content or standard documents referred to in the above-mentioned embodiments constitute a part of this specification, for the sake of simplicity of description of the specification. Therefore, it is to be understood that the content of the above standard content and portions of the standard documents are added to or contained in the scope of the present invention.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (24)

A method of receiving a downlink signal by a MTC (Machine Type Communication)
Monitoring a common area and a terminal specific area set for the MTC terminal;
Receiving common control information or scheduling information for the common control information through the common area; And
And receiving a UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region. The method according to claim 1,
Wherein the common area includes a common search space of a downlink control channel,
Wherein the UE-specific region includes a UE-specific search space of a downlink control channel. The method according to claim 1,
The time resource setting information for the common area or the UE-
And setting information for a subframe pattern or a radio frame pattern. The method of claim 3,
The setting information for the sub-frame pattern or the radio frame pattern includes:
Cell-specific or UE-specific higher layer signaling. The method of claim 3,
The setting information for the sub-frame pattern or the radio frame pattern includes:
Subframe set information, and is allocated through a system information block for the MTC terminal. The method according to claim 1,
The frequency resource for the common area or the UE-
And is allocated in units of six consecutive physical resource blocks (PRBs). A method for transmitting a downlink signal by a base station,
Setting a common area and a terminal specific area for a MTC (Machine Type Communication) terminal;
Transmitting common control information or scheduling information for the common control information through the common area; And
And transmitting a UE-specific control information or a PDSCH according to the UE-specific control information through the UE-specific region. 8. The method of claim 7,
Wherein the common area includes a common search space of a downlink control channel,
Wherein the UE-specific region includes a UE-specific search space of a downlink control channel. 8. The method of claim 7,
The time resource setting information for the common area or the UE-
And setting information for a subframe pattern or a radio frame pattern. 10. The method of claim 9,
The setting information for the sub-frame pattern or the radio frame pattern includes:
Cell-specific or UE-specific higher layer signaling. 10. The method of claim 9,
The setting information for the sub-frame pattern or the radio frame pattern includes:
Subframe set information, and is allocated through a system information block for the MTC terminal. 8. The method of claim 7,
The frequency resource for the common area or the UE-
And is allocated in units of six consecutive physical resource blocks (PRBs). 1. A MTC (Machine Type Communication) terminal for receiving a downlink signal,
A controller for monitoring a common area and a terminal specific area set for the MTC terminal; And
Receiving common control information or scheduling information for the common control information through the common area,
And a receiver for receiving UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region. 14. The method of claim 13,
Wherein the common area includes a common search space of a downlink control channel,
Wherein the UE-specific region includes a UE-specific search space of a downlink control channel. 14. The method of claim 13,
The receiver may further comprise:
Wherein the base station further receives time resource setting information for the common area or the terminal specific area including setting information for a subframe pattern or a radio frame pattern. 16. The method of claim 15,
The receiver may further comprise:
And receives setting information for the sub-frame pattern or the radio frame pattern through cell-specific or UE-specific upper layer signaling. 16. The method of claim 15,
The setting information for the sub-frame pattern or the radio frame pattern includes:
Subframe set information, and is received through a system information block for the MTC terminal. 14. The method of claim 13,
The frequency resource for the common area or the UE-
And is allocated in units of six consecutive physical resource blocks (PRBs). A base station for transmitting a downlink signal,
A controller for setting a common area and a terminal specific area for a MTC (Machine Type Communication) terminal; And
Transmitting common control information or scheduling information for the common control information through the common area,
And a transmitter for transmitting UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region. 20. The method of claim 19,
Wherein the common area includes a common search space of a downlink control channel,
Wherein the UE-specific region includes a UE-specific search space of a downlink control channel. 20. The method of claim 19,
The transmitter may further comprise:
Wherein the base station further transmits time resource setting information for the common area or the UE-specific area including setting information for a subframe pattern or a radio frame pattern. 22. The method of claim 21,
The transmitter may further comprise:
Wherein the setting information for the subframe pattern or the radio frame pattern is transmitted through cell-specific or UE-specific upper layer signaling. 22. The method of claim 21,
The setting information for the sub-frame pattern or the radio frame pattern includes:
Subframe set information, and is transmitted through a system information block for the MTC terminal. 20. The method of claim 19,
The frequency resource for the common area or the UE-
And is allocated in units of six consecutive physical resource blocks (PRBs).

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